QUANTOFIX Chlorine Dioxide High Range Test Strip Review: Test your CDS without diluting it. - These high ppm range test strips are a indispensable. I originally had to dilute my CDS by factor 10.,Take notes to math make adjustments. Done with all that now. These strips have a wide enough range to tell me what I need to know in seconds. Review: They were off (under reporting PPM) by over 2,000 PPM - just like other reviewers say. Don't buy! - Hate to say it but the accuracy of these test strips is off the chart useless. It is more accurate to say they just don't work... My 3,000 PPM solution measured at 1,000 PPM using these strips. My 300 PPM solution measured at about 25 PPM, and barely. My 30 PPM solution measured ZERO PPM with these strips. The test strips I received were not expired (they have a year to go). The container was new/sealed when received it. I followed the directions exactly. I performed the tests multiple times. They are faulty, like many other reviewers state they are here. This could severely injure someone who is trusting their accuracy. I do have accurate strips which tested the above solutions and matched the solution strengths perfectly, as they do each time. Don't waste your money or risk your life.
| ASIN | B08F2Q11QN |
| Best Sellers Rank | #430,645 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #529 in pH Test Strips |
| Brand Name | MACHEREY-NAGEL |
| Customer Reviews | 3.7 out of 5 stars 28 Reviews |
| Manufacturer | Macherey Nagel |
O**V
Test your CDS without diluting it.
These high ppm range test strips are a indispensable. I originally had to dilute my CDS by factor 10.,Take notes to math make adjustments. Done with all that now. These strips have a wide enough range to tell me what I need to know in seconds.
A**R
They were off (under reporting PPM) by over 2,000 PPM - just like other reviewers say. Don't buy!
Hate to say it but the accuracy of these test strips is off the chart useless. It is more accurate to say they just don't work... My 3,000 PPM solution measured at 1,000 PPM using these strips. My 300 PPM solution measured at about 25 PPM, and barely. My 30 PPM solution measured ZERO PPM with these strips. The test strips I received were not expired (they have a year to go). The container was new/sealed when received it. I followed the directions exactly. I performed the tests multiple times. They are faulty, like many other reviewers state they are here. This could severely injure someone who is trusting their accuracy. I do have accurate strips which tested the above solutions and matched the solution strengths perfectly, as they do each time. Don't waste your money or risk your life.
J**N
Funcionan
Tiritas excellent
K**N
These are dangerous as the measurements were LOW by 90%
I liked the idea of using these high range strips as I could skip the dilution step in measuring up to 3000ppm. However, when I tested the strips by measuring a known 3000ppm solution the results showed only 250ppm. That is quite a difference. Imagine if I trusted the readings. I would be using a solution that is 10x stronger than I thought! That could cause serious problems. I was so appalled I returned these the very same day I received them. I suppose I might have gotten a bad batch. But, be aware, you must test these against a known solution as their quality control can't be trusted.
M**.
Does not work!
It’s measurement was way off… Strip should have read closer to 500 like the other brand… instead it read closer to 25!!! Same liquid sample!
M**S
Wrong
Absolutely inaccurate by far. The high range chlorine dioxide test strips do not match anything on the color range on the canister. Previous purchases of the identical item were perfect. It’s almost like the wrong strips we’re put in this canister. Strange!
E**O
great test strips for concentration
great test strips for concentration
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